44204221 has 2 divisors, whose sum is σ = 44204222. Its totient is φ = 44204220.

The previous prime is 44204189. The next prime is 44204231. The reversal of 44204221 is 12240244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37884025 + 6320196 = 6155^2 + 2514^2 .

It is a cyclic number.

It is not a de Polignac number, because 44204221 - 2⁵ = 44204189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44204231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22102110 + 22102111.

It is an arithmetic number, because the mean of its divisors is an integer number (22102111).

Almost surely, 2^44204221 is an apocalyptic number.

It is an amenable number.

44204221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44204221 is an equidigital number, since it uses as much as digits as its factorization.

44204221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 44204221 is about 6648.6254970482. The cubic root of 44204221 is about 353.5801810321.

Adding to 44204221 its reverse (12240244), we get a palindrome (56444465).

The spelling of 44204221 in words is "forty-four million, two hundred four thousand, two hundred twenty-one".